Sélestat is a commune in the Bas-Rhin region of Alsace in north-eastern France. Sub-prefecture and seat of the community of communes of Sélestat, it had 19,360 inhabitants at the last census in 2018, which made it the fifth commune of Bas-Rhin and the eighth Alsatian commune in number of inhabitants. Its inhabitants are called Sélestadiens and Sélestadiennes. Located in the plain of Alsace, at the foot of the Vosges, the town is crossed by the Ill and its territory is largely covered by the wetlands of the Grand Ried.